On 11/29/08 at 4:29 AM, guerom00 at gmail.com (guerom00) wrote:
>I have, say a list of list. Each element is a list of length 3 i.e.
>myList={{x1,y1,z1},{x2,y2,z2},...{xN,yN,zN}}
>Now, let's say I want to delete from this list the element which
>have x=2 and 3 using DeleteCases. This works :
>DeleteCase[myList,{2,_,_}] DeleteCases[myList,{3,_,_}]
>but I would like to use
>DeleteCases[myList,{{2,_,_},{3,_,_}}]
>and this does not work...
>How do I combine multiple patterns in DeleteCases ?
Rather than trying to use multiple patterns, try using a single
pattern using Alternatives. That is
DeleteCases[myList, {Aternatives@@{2,3},__}]
or
DeleteCases[myList, {2 | 3,__}]
will do what you want